KR102163106B1 - System for alerting short circuit in manhole - Google Patents

Abstract

An embodiment of the present invention provides a leakage alarm system, which comprises: a leakage detection sensor for detecting the leakage of a manhole in which a power line is buried; a leakage alarm warning of the leakage; and a controller outputting a warning alarm notifying the leakage through the leakage alarm when the leakage in the manhole is detected. In addition, the leakage alarm system further includes: a battery; a relay switching charging or discharging of the battery; and a leakage detector switching the relay so that the battery is charged through the power line buried in the manhole when the manhole leakage is not detected, and switching to provide battery DC power charged in the battery to the leakage alarm and the controller when the manhole leakage is detected.

Description

System for alerting short circuit in manhole}

The present invention relates to an electric leakage warning system for a manhole and a water playing place, and to a manhole and an electric leakage warning system for a water playing place that alarms the electric leakage at the manhole and the water playing place.

In general, a manhole is an underground structure installed in the middle of this pipeline for construction, inspection, and other repair work such as cable entry, withdrawal, connection, etc., installed at each intermediate distance or at the end of the apartment complex where the track is installed. do.

The manhole is buried in the basement, and as shown in FIG. 1, it is composed of a body such as concrete having a space for wiring a high-voltage cable, and a manhole cover that opens and closes the upper opening of the body. Manhole covers have been made of cast iron that can withstand the load of vehicles.

Therefore, there is a problem that electric shocks occur several times through electricity to the manhole cover made of cast iron on rainy days while a short circuit occurs in a power line such as a high-voltage cable installed inside the manhole.

In order to solve these shortcomings, a technique has been proposed in which the manhole cover is made of a material that does not conduct electricity. In the case of a manhole cover made of a material that does not conduct electricity, electric shock can be prevented, but since the manhole is installed in a place that receives a lot of load, it cannot withstand the load transmitted from vehicles and pedestrians, and its lifespan is very short. It is not practically used.

In addition, when it is installed in the manhole for electricity and communication, it is not possible to effectively block rainwater flowing in from the outside, so after a certain period of time, a large amount of rainwater is stored in the manhole, and due to the above-described problem, electricity and communication lines located in the manhole are frequently There is also a problem of being damaged. In addition, there is a problem that frequently occurs safety accidents in which workers are electrocuted when repairing electric and communication lines.

In addition, even if the manhole cover is a material that does not conduct electricity, another alarm device is required for this, because an electric shock accident occurs when the manhole is filled with water due to rainy season or a lot of rain.

In addition, since there are many devices that can cause a short circuit, such as lighting lamps or fountains, in a water playground (swimming pool or fountain, etc.), there is also a need to install a short circuit warning device to prevent accidents in advance.

Korean Patent Registration 10-1074499

It is an object of the present invention to provide a means to immediately detect an alarm when a short circuit occurs in a manhole, to warn and notify an administrator.

An embodiment of the present invention is a leakage detection sensor for detecting a leakage current of the manhole in which the power line is buried; An earth leakage alarm to warn of an earth leakage; It may include; a controller for outputting a warning alarm notifying the electric leakage through the electric leakage alarm when a manhole electric leakage is detected.

An electric leakage warning system for the manhole and water play area includes: a battery; A relay for switching the discharge of the battery; When a manhole leakage current is detected, a leakage leakage detector for switching the relay to supply DC power of the battery charged in the battery to the leakage leakage alarm and the controller may be included.

The manhole and water leakage warning system includes a wired/wireless communication device that supports wired or wireless communication with an external manager terminal, wherein the leakage detector is configured to detect battery DC power charged in the battery when a manhole leakage is detected. Switching to be supplied to the wired/wireless communication device, the controller, when a manhole leakage current is detected, may notify the administrator terminal of the leakage.

The electric leakage detection sensor detects a voltage of the manhole cover, and the electric leakage detector may determine a leakage current when the voltage of the manhole cover exceeds a preset threshold.

The manhole and the leakage alarm system of the water play place includes an insulating plate that slides from the top of the manhole cover to insulate the upper surface of the manhole cover, and the earth leakage detector, when a manhole leakage is detected, slides the insulating plate to move the manhole The top of the lid can be insulated.

The surface of the insulating plate may be characterized in that it is provided with a lamp that emits a short circuit notification phrase.

According to an embodiment of the present invention, when a short circuit occurs in a manhole, it is detected and alerted with an alarm sound and an alarm lamp to prevent an electric shock accident. In addition, it is possible to promptly notify the manager to enable quick repair.

1 is a view showing a manhole structure.
2 is a block diagram of a leakage warning system for a manhole and a water play area according to an embodiment of the present invention.
3 is an exemplary diagram in which a battery is charged when a manhole leakage current is not detected according to an embodiment of the present invention.
4 is a diagram illustrating an operation of a controller and an earth leakage alarm using battery power when a manhole leakage current is detected according to an embodiment of the present invention.
5 is an exemplary illustration in which an insulating plate is provided according to an embodiment of the present invention.
Figure 6 is a picture showing a state in which the insulating plate is slid to cover the upper surface of the manhole cover according to an embodiment of the present invention.
7 is an exemplary illustration of an earth leakage alarm installed in an existing manhole according to an embodiment of the present invention.
8 is an exemplary illustration of an earth leakage alarm installed in a water play area according to an embodiment of the present invention.

Hereinafter, the advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and is provided to completely inform the scope of the invention to those of ordinary skill in the art to which the present invention belongs. As such, the invention is only defined by the scope of the claims. In addition, when it is determined that related well-known technologies or the like may obscure the subject matter of the present invention in describing the present invention, detailed descriptions thereof will be omitted.

FIG. 2 is a configuration diagram of an electric leakage warning system for a manhole and a water play place according to an embodiment of the present invention, and FIG. 3 is an exemplary view in which a battery is charged when a manhole electric leakage is not detected according to an embodiment of the present invention, and FIG. 4 Is an exemplary illustration of the operation of a controller and an earth leakage alarm through battery power when a manhole leakage is detected according to an embodiment of the present invention, FIG. 5 is an exemplary illustration in which an insulating plate is provided according to an embodiment of the present invention, and FIG. 6 is the present invention. It is a picture showing a state in which the insulating plate is slid to cover the upper surface of the manhole cover according to the embodiment of, Figure 7 is an exemplary picture of an earth leakage alarm installed in the existing manhole according to an embodiment of the present invention, and Figure 8 is of the present invention. It is an exemplary picture of an earth leakage alarm installed in a water play place according to an embodiment.

As shown in FIG. 2, a leakage detection sensor 100 for detecting a leakage current in a manhole in which a power line is buried, a leakage warning device 300 for warning of a leakage leakage, and a manhole When an electric leakage is detected, a controller 200 may be provided to output a warning alarm notifying of the electric leakage through the electric leakage alarm 300. In addition, the battery 600 is charged through the power line buried in the manhole, the relay 500 for switching charging or discharging of the battery 600, and the battery DC charged in the battery 600 when a manhole leakage is detected. It may further include an earth leakage detector 400 for switching the relay 500 to supply power to the earth leakage alarm 300 and the controller 200.

The electric leakage detection sensor 100 is a sensor that detects electric leakage in a manhole in which a power line supplying AC power is buried. In other words, it detects a short circuit in the power line buried in the manhole.For example, when the manhole is filled with water due to a lot of rain, the electric current from the power line burns through the inner wall of the manhole and the manhole cover, so that voltage can be detected at the inner wall of the manhole or the manhole cover. have. Therefore, the electric leakage detection sensor 100 may be implemented as a sensor that detects voltage such as a manhole cover, and when a manhole is newly constructed, the electric leakage detection sensor 100 may be installed through the manhole. However, in the case of an existing manhole, it can be installed separately. A transparent plate is installed on the manhole cover so that it is possible to know whether the electric leakage detection sensor 100 is installed from the outside.

The earth leakage alarm 300 performs a function of warning of an earth leakage, and may be implemented as various alarm warning means such as a speaker outputting an earth leakage alarm sound and a lamp emitting an earth leakage alarm light.

The wired/wireless communication unit 700 is a communication module that supports wired communication or wireless communication with an external manager terminal. When wired communication is supported, data communication is performed according to an Internet protocol such as Transmission Control Protocol/Internet Protocol (TCP/IP). In addition, when supporting wireless communication, for example, when performing mobile communication such as 3G, 4G, 5G, etc., an RF transmitter (not shown) that up-converts and amplifies the frequency of a wirelessly transmitted signal, and a received wireless signal. It includes an RF receiver (not shown) for low-noise amplification and down-converting the frequency.

The external manager terminal through which the wired/wireless communication unit 700 communicates is a terminal used by the administrator, and in the drawings, a smart phone is used as an example, but not only a smartphone, but also a desktop PC and a tablet PC. PC), a slate PC, a notebook computer, and the like. Of course, it is natural that the terminal to which the present invention is applicable is not limited to the above-described types, and may include all terminals capable of communicating with external devices.

The battery 600 is a charging/discharging body that is charged through a power line buried in a manhole. The battery 600 is converted into electrical energy by a chemical action, and a lead acid battery, an alkali storage battery, an MF storage battery, or the like may be used.

The relay 500 is a switch for switching charging or discharging of the battery 600. In other words, the relay 500 (relay) is a device that operates when an input reaches a certain value to open and close another circuit. A relay 500 with a contact, a thermal relay 500, and a pressure relay 500 , Optical relay 500, and the like.

The earth leakage detector 400 switches the relay 400 to supply the battery DC power charged in the battery 600 to the earth leakage alarm 300, the controller 200, and the wired/wireless communication unit 700 when a manhole leakage is detected. .

For example, when a manhole electric leakage is detected, the electric leakage detector 400, as shown in FIG. 4, the discharge power of the battery 600 to the controller 200, the electric leakage alarm 300, the wired/wireless communication unit 700 Switch to each supply.

For reference, AC power supplied through the charger is converted into DC power in an AC-DC converter (not shown) so that the battery is charged.

The controller 200 outputs a warning alarm informing of the electric leakage through the electric leakage alarm 300 when a manhole electric leakage is detected. For example, when a voltage higher than a preset threshold is detected on the manhole cover, it is determined that a leakage current has occurred, and the controller 200 operates the leakage alarm 300 to output a leakage alarm sound and a leakage alarm light. . Therefore, through the earth leakage alarm of the earth leakage alarm 300, people around the manhole can immediately know that the manhole is in an earth leakage state.

Further, the controller 200, when a manhole leakage is detected, implements to notify the administrator terminal of the leakage. Therefore, when a short circuit is detected, the manager can immediately know in real time that a short circuit has occurred using his or her smartphone.

Eventually, in the manhole and water leakage warning system of the present invention, the relay 500 operates when an abnormal signal of a leakage current is generated to provide power to each component from the battery 600, but normally, using AC power. When a leakage current is detected while in a charged state, power is supplied to the controller through the battery, so that the leakage alarm 300 and the wired/wireless communication unit 700 can be operated.

The manhole and water leakage warning system of the present invention automatically detects the leakage and generates an alarm sound or warning light when a water leakage occurs in the electric manhole provided in each house due to reasons such as the rainy season. It will be possible to automatically transmit the fact of a short circuit to the manager terminal such as a smartphone of (KEPCO official).

On the other hand, the electric leakage detection sensor 100 is implemented to detect a voltage flowing through the manhole cover, and the electric leakage detector 400, when the voltage of the manhole cover exceeds a preset threshold, to determine as a leakage current.

Therefore, when a short circuit occurs, voltage flows through the manhole cover, and there is a risk of an accident such as electric shock if a person steps on the manhole cover.

In order to prevent such a manhole electric shock accident, the manhole and water leakage warning system of the present invention includes an insulating plate outside the edge of the manhole cover as shown in FIG. 5. Although not shown, a driving body for horizontally sliding the insulating plate is further provided.

When a manhole electric leakage is detected, the electric leakage detector 400 insulates the upper surface of the manhole cover by sliding the insulating plate as shown in FIG. 6. Therefore, when there is a short circuit, the insulation plate automatically covers the upper surface of the manhole cover, and the electric leakage current of the manhole cover is blocked by the insulation plate, so that even if a person steps on the manhole cover, it corresponds to stepping on the insulation plate, so that electric shock does not occur.

Further, the surface of the insulating plate is provided with a lamp that emits an electric leakage warning message. Therefore, when a manhole electric leakage is detected, the insulation plate slides to cover the upper surface of the manhole cover, and the electric leakage notice message is emitted on the surface of the insulation plate, so that people immediately know that a electric leakage has occurred in the manhole through the electric leakage notice message on the insulation plate. As a result, the manhole is not approached, and as a result, electric shock accidents can be prevented in advance.

On the other hand, in the place where the existing manhole is installed, a separate alarm device is installed by installing an earth leakage detection sensor in the manhole, and installing an earth leakage alarm control box around the manhole as shown in FIG. 7. In addition, as shown in Fig. 8, a separate alarm device can be installed by installing a leakage detection sensor and a leakage warning control box around the water playground.

The embodiments in the description of the present invention described above are presented by selecting the most preferable examples to aid the understanding of those skilled in the art among various possible examples, and the technical idea of the present invention is not necessarily limited or limited only by this embodiment. , Various changes and modifications, and other equivalent embodiments are possible within the scope of the technical spirit of the present invention.

100: earth leakage detection sensor
200: controller
300: earth leakage alarm
400: earth leakage detector
500: relay
600: battery
700: wired/wireless charger

Claims (6)

An earth leakage detection sensor for detecting an earth leakage in the manhole in which the power line is buried;
An earth leakage alarm to warn of an earth leakage;
A controller for outputting a warning alarm informing of the electric leakage through the electric leakage alarm when a manhole electric leakage is detected;
A battery that is charged through a power line buried in a manhole;
A relay for switching charging or discharging of the battery;
An earth leakage detector for switching a relay to supply battery DC power charged in a battery to the earth leakage alarm and a controller when a manhole leakage current is detected;
Including; an insulating plate sliding from the top of the manhole cover to insulate the upper surface of the manhole cover,
The earth leakage detector, when a manhole leakage is detected, by sliding the insulating plate to insulate the upper surface of the manhole cover, a manhole and a leakage alarm system of a water play place.
delete The method according to claim 1, wherein the manhole and the water leakage warning system of the place,
Includes; a wired/wireless communication device that supports wired or wireless communication with an external manager terminal,
The electric leakage detector switches to supply battery DC power charged in the battery to the wired/wireless communication unit when a manhole electric leakage is detected,
The controller, when a manhole leakage is detected, a leakage warning system of a manhole and a water play place to notify the fact of the leakage to the manager terminal.
The method according to claim 1,
The leakage detection sensor detects the voltage of the manhole cover,
The electric leakage detector is an electric leakage warning system of a manhole and a water playing area that determines a leakage when the voltage of the manhole cover exceeds a preset threshold.
delete The method according to claim 1,
An electric leakage warning system for a manhole and a water play place, characterized in that a lamp for emitting an electric leakage warning message is provided on the surface of the insulating plate.

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